Only four years ago, Morrie Markoff began his fifth career. He wanted to write, be a writer. This weekend, he will participate in the L.A. Times Book Festival reading from his first published book. Clearly, at age 103, the title of the book comes as no surprise: Keep Breathing The interview with Steve Lopez captured my imagination. I was surprised and delighted by what touched me in this interview: Keep breathing. Writing. Having a time and place to read one’s story for others. These words, these thoughts bring joy to …